<script setup>
import {onMounted, ref} from 'vue'
import {getCategoryFilterAPI, getSubCategoryAPI} from '@/api/category.js'
import {useRoute} from 'vue-router'
import GoodsItem from "@/views/Home/components/GoodsItem.vue";

const filterData = ref({})
const getFilterDate = async () => {
  // 通过route.params.id获取路由参数
  const route = useRoute()
  const res = await getCategoryFilterAPI(route.params.id)
  console.log(res)
  filterData.value = res.result
}
onMounted(() => {
  getFilterDate()
})
const goodList = ref([])
const route = useRoute()
const reqData = ref({
  categoryId: route.params.id,
  page: 1,
  pageSize: 20,
  // 这里的sortField字段，暂时写成publishTime。用户点击哪个按钮，就传什么字段
  sortField: 'publishTime'
})
const getGoodList = async () => {
  const res = await getSubCategoryAPI(reqData.value)
  console.log(res)
  goodList.value = res.result.items
}
onMounted(() => {
  getGoodList()
})
// tab切换时会触发该事件
const tabChange = () => {
  // 这里不需要设置reqData.value.sortField值，因为我们使用v-model进行双向绑定
  // 因此当点击tab切换时，reqData.value.sortField值会自动更新
  console.log('tab切换了', reqData.value.sortField)
  // 切换之后，默认展示第一页数据
  reqData.value.page = 1
  // 然后重新获取该分类下的数据，然后渲染页面
  getGoodList()
}
onMounted(() => {
  tabChange()
})
// 加载更多
const disabled = ref(false)
const load = async () => {
  // console.log('加载更多数据咯')
  // 获取下一页的数据
  reqData.value.page++
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = [...goodList.value, ...res.result.items]
  // 加载完毕 停止监听
  if (res.result.items.length === 0) {
    disabled.value = true
  }
}
</script>

<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${filterData.parentId}` }">{{ filterData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ filterData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <!--1. 我们要实现列表筛选功能，就需要知道当前点击的是哪个选项，为选项绑定事件，当修改选项时，会触发该事件，利用v-model进行绑定，获取到选项的值-->
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <!--页面触底将会触发load事件-->
      <div class="body" v-infinite-scroll="load">
        <!-- 商品列表-->
        <GoodsItem v-for="goods in goodList" :goods="goods" :key="goods.id"></GoodsItem>
      </div>
    </div>
  </div>

</template>


<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }


}
</style>